Quick insertion type manual two-stage leveling leg

Abstract

The utility model relates to a quick insertion type manual two-stage leveling leg, and belongs to the technical field of vehicle leveling. Comprising a speed change mechanism, a power transmission mechanism, a first-stage telescopic mechanism, a second-stage telescopic mechanism, a locking mechanism and a supporting shell. The power transmission mechanism is arranged below the speed change mechanism and is connected with the speed change mechanism, the primary telescopic mechanism is sleeved on the power transmission mechanism in a manner of moving up and down and is connected with the power transmission mechanism, the primary telescopic mechanism is sleeved on the secondary telescopic mechanism, and the secondary telescopic mechanism is connected with the primary telescopic mechanism. The first-stage telescopic mechanism is arranged on the base and connected with the second-stage telescopic mechanism through the locking mechanism, the first-stage telescopic mechanism is sleeved with the supporting shell, and the top end of the supporting shell is connected with the bottom end of the speed change mechanism. According to the utility model, the efficiency of manual leveling erection and withdrawal of the vehicle carrying platform can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle leveling, in particular to a quick-insertion manual two-stage leveling leg. Background Art

[0002] Most existing vehicle-mounted manual leveling legs are single-stage leveling legs, with only one telescopic rod extending during operation. During leveling and installation, the hand-cranked drive shaft drives the trapezoidal screw through a reduction mechanism to perform spiral motion, causing the trapezoidal nut to perform linear motion. This causes the telescopic rod of the leveling leg to slowly extend downward until the load-bearing plate contacts the upper surface of the block, achieving the leveling state. During retraction, the telescopic rod slowly retracts upward, and the load-bearing plate gradually disengages from the contact surface until it retracts to its original stowed position. Due to vehicle passability requirements, when the leveling leg is installed on the vehicle chassis, it must ensure that the distance between the bottom of the load-bearing plate and the ground is greater than the vehicle's minimum ground clearance. At the same time, due to the space constraints of the vehicle-mounted platform, the number of block pads provided often cannot meet the requirement to minimize the distance between the bottom of the leveling leg's load-bearing plate and the upper surface of the block pads. Therefore, during leveling and installation, the idle travel of the leveling leg extension and retraction is large, making the entire leveling process time-consuming and inefficient. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a quick-insertion manual two-stage leveling leg to solve the problem of long time consumption and low efficiency in manual leveling, erecting and withdrawing of a vehicle loading platform.

[0004] The technical solution of the utility model for solving the above-mentioned technical problems is as follows: a quick-insert manual two-stage leveling leg, comprising: a speed shifting mechanism, a power transmission mechanism, a primary telescopic mechanism, a secondary telescopic mechanism, a locking mechanism and a supporting shell; the power transmission mechanism is arranged below the speed shifting mechanism and is connected to the speed shifting mechanism, the primary telescopic mechanism is movably mounted on the power transmission mechanism up and down and is connected to the power transmission mechanism, the primary telescopic mechanism is mounted on the secondary telescopic mechanism and is connected to the secondary telescopic mechanism through the locking mechanism, the supporting shell is mounted on the primary telescopic mechanism, and the top end is connected to the bottom end of the speed shifting mechanism.

[0005] The beneficial effects of the present invention are as follows: by setting a first-level telescopic mechanism and a second-level telescopic mechanism, and connecting the two through a locking mechanism, it is beneficial to quickly adjust the overall length of the first-level telescopic mechanism and the second-level telescopic mechanism and lock and fix them after adjustment, and at the same time cooperate with the speed change mechanism and the power transmission mechanism to achieve improved efficiency when manually extending and retracting the leveling legs. At the same time, the mutual connection between the power transmission mechanism, the first-level telescopic mechanism, the second-level telescopic mechanism and the supporting shell makes the overall structure simple and compact, the closed height of the leveling leg is small, and the extension stroke is large, which can quickly achieve minimization of the gap between the leveling leg load-bearing plate and the upper surface of the pad, with high leveling efficiency and wide applicability.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, the speed change mechanism includes: a worm, a turbine and a housing; the worm and the turbine are both arranged in the housing, the worm is engaged with the turbine, and the turbine is connected to the power transmission mechanism.

[0008] The beneficial effect of adopting the above further solution is that the worm gear transmission is conducive to transmitting external power to the power transmission mechanism, thereby realizing the push-out and retraction of the first-level telescopic mechanism and the second-level telescopic mechanism.

[0009] Furthermore, a connecting hole is provided on the end of the worm extending out of the box body, and the connecting hole is a blind hole, and the connecting hole is adapted to be connected with an external crank.

[0010] The beneficial effect of adopting the above further solution is that the connecting hole is adapted to be connected with the external crank, which is conducive to the generation and transmission of power by turning the crank.

[0011] Furthermore, the power transmission mechanism includes: a screw, a turbine mounting seat, a bearing, a load-bearing seat and a plurality of load-bearing rods; the turbine mounting seat is fixedly sleeved on the end of the screw and connected to the turbine, the bearing is sleeved on the screw, the bearing is arranged in the load-bearing seat, and the plurality of load-bearing rods are wound around the load-bearing seat and connected to the inner wall of the support shell.

[0012] The beneficial effect of adopting the above further scheme is that the turbine mounting seat is connected to the turbine, which is conducive to transmitting the power transmitted by the turbine to the screw rod, driving the screw rod to rotate, and the bearing cooperates with the load-bearing seat and the load-bearing rod to ensure that the screw rod rotates coaxially inside the support shell.

[0013] Furthermore, the first-level telescopic mechanism includes: a first-level main rod, a transmission nut and a fastening baffle; the fastening baffle is arranged at the top of the first-level main rod, the transmission nut is arranged in the first-level main rod and installed on the fastening baffle, the screw rod passes through the fastening baffle and the transmission nut, and is threadedly connected to the transmission nut.

[0014] The beneficial effect of adopting the above further solution is that the screw rod is threadedly connected to the transmission nut, which is conducive to driving the transmission nut to move on the screw rod through the rotation of the screw rod, thereby realizing the up and down displacement of the first-level telescopic mechanism.

[0015] Furthermore, the first-level main rod is a tubular structure, and a first-level locking hole is provided on the side wall. The first-level locking hole is a through hole, and the locking mechanism passes through the first-level locking hole. The second-level telescopic mechanism is provided in the first-level main rod.

[0016] The beneficial effect of adopting the above further solution is that the primary locking hole is conducive to cooperating with the secondary locking hole and locking mechanism in the secondary telescopic mechanism, thereby realizing the connection, fixation and height adjustment of the primary telescopic mechanism and the secondary telescopic mechanism.

[0017] Furthermore, the secondary telescopic mechanism includes: a secondary main rod, a universal adjustment device, a load-bearing plate and a handle; the universal adjustment device is arranged at the bottom end of the secondary main rod, the load-bearing plate is arranged at the bottom end of the universal adjustment device, and the handle is installed on the load-bearing plate.

[0018] The beneficial effects of adopting the above-mentioned further scheme are: the universal adjustment device is conducive to fixing the load-bearing plate at the bottom end of the secondary main pole in different adjustment postures, so that the load-bearing plate can contact the contact pads on different terrains accordingly, and the handle is conducive to manually and quickly adjusting the secondary main pole up and down within the first main pole, thereby improving the adjustment efficiency of the entire leveling leg.

[0019] Furthermore, the secondary main rod is a tubular structure, and a plurality of secondary locking holes are provided on the side wall. The secondary locking holes are through holes, and the locking mechanism passes through the secondary locking holes and the primary locking holes.

[0020] The beneficial effect of adopting the above further solution is that the locking mechanism passes through the secondary locking hole and the primary locking hole, which is conducive to fixing the primary telescopic mechanism and the secondary telescopic mechanism after the length is adjusted.

[0021] Furthermore, the locking mechanism includes a quick-release pin shaft and a spring clamping plate, the spring clamping plate is arranged on the primary locking hole, the quick-release pin shaft passes through the secondary locking hole and the primary locking hole, and is clamped with the spring clamping plate.

[0022] The beneficial effect of adopting the above further scheme is that the quick-release pin shaft passes through the secondary locking hole and the primary locking hole and is clamped with the spring clamp plate, which is conducive to fixing the quick-release pin shaft and preventing the quick-release pin shaft from loosening from the secondary locking hole and the primary locking hole during operation.

[0023] Furthermore, the universal adjustment device includes: a ball head fixing seat, a ball head cover plate and a ball head support leg; the ball head fixing seat is an arc-shaped block structure arranged at the bottom end of the secondary main rod, the ball head cover plate is arranged at the bottom end of the secondary main rod, and the ball head support leg is adapted and rotatably arranged in the space formed by the ball head fixing seat and the ball head cover plate, and the load-bearing plate is installed on the ball head support leg by screws.

[0024] The beneficial effect of adopting the above further solution is that it is conducive to rotatably setting the ball head support leg in the space formed by the ball head fixing seat and the ball head cover plate, thereby realizing universal adjustment of the bearing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present utility model;

[0026] Figure 2 A cross-sectional view of the overall structure provided by an embodiment of the utility model;

[0027] Figure 3 A schematic diagram of the speed change mechanism structure provided by an embodiment of the present utility model;

[0028] Figure 4 A schematic diagram of the power transmission mechanism structure provided by an embodiment of the present utility model;

[0029] Figure 5 A schematic diagram of the structure of the first-stage telescopic mechanism and the locking mechanism provided in an embodiment of the utility model;

[0030] Figure 6 A schematic diagram of the structure of a two-stage telescopic mechanism provided in an embodiment of the utility model;

[0031] Figure 7 A schematic diagram of the structure of the overall structure provided by an embodiment of the present utility model when extended on a vehicle;

[0032] Figure 8 This is a schematic structural diagram of the overall structure provided by an embodiment of the present utility model when retracted on a vehicle.

[0033] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0034] 1. Speed ​​changing mechanism; 2. Power transmission mechanism; 3. First-stage telescopic mechanism; 4. Second-stage telescopic mechanism; 5. Locking mechanism; 6. Support housing; 11. Worm; 12. Turbine; 13. Housing; 21. Screw; 22. Turbine mounting seat; 23. Bearing; 24. Load-bearing seat; 25. Load-bearing rod; 31. First-stage main rod; 32. Transmission nut; 33. Fastening baffle; 41. Second-stage main rod; 42. Universal adjustment device; 43. Load-bearing plate; 44. Handle; 51. Quick-release pin shaft; 52. Spring clamp; 111. Connecting hole; 311. First-stage locking hole; 411. Second-stage locking hole; 421. Ball head fixing seat; 422. Ball head cover; 423. Ball head support leg. DETAILED DESCRIPTION

[0035] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0036] like Figure 1 and Figure 2As shown, a quick-insert manual two-stage leveling leg includes: a speed change mechanism 1, a power transmission mechanism 2, a first-level telescopic mechanism 3, a second-level telescopic mechanism 4, a locking mechanism 5 and a support shell 6; the power transmission mechanism 2 is arranged below the speed change mechanism 1 and is connected to the speed change mechanism 1, the first-level telescopic mechanism 3 is movably mounted on the power transmission mechanism 2 and is connected to the power transmission mechanism 2, the first-level telescopic mechanism 3 is mounted on the second-level telescopic mechanism 4 and is connected to the second-level telescopic mechanism 4 through the locking mechanism 5, and the support shell 6 is mounted on the first-level telescopic mechanism 3, and the top end is connected to the bottom end of the speed change mechanism 1.

[0037] The beneficial effects of the present invention are as follows: by setting a first-level telescopic mechanism and a second-level telescopic mechanism, and connecting the two through a locking mechanism, it is beneficial to quickly adjust the overall length of the first-level telescopic mechanism and the second-level telescopic mechanism and lock and fix them after adjustment, and at the same time cooperate with the speed change mechanism and the power transmission mechanism to achieve improved efficiency when manually extending and retracting the leveling legs. At the same time, the mutual connection between the power transmission mechanism, the first-level telescopic mechanism, the second-level telescopic mechanism and the supporting shell makes the overall structure simple and compact, the closed height of the leveling leg is small, and the extension stroke is large, which can quickly achieve minimization of the gap between the leveling leg load-bearing plate and the upper surface of the pad, with high leveling efficiency and wide applicability.

[0038] Preferably, Figure 3 As shown, the speed change mechanism 1 includes: a worm 11, a turbine 12 and a housing 13; the worm 11 and the turbine 12 are both arranged in the housing 13, the worm 11 is engaged with the turbine 12, and the turbine 12 is connected to the power transmission mechanism 2.

[0039] It should be noted that: in the technical solution of the present invention, the speed change mechanism 1 also includes other components. Since the speed change mechanism 1 is a prior art, not all of its components are described.

[0040] The beneficial effect of adopting the above preferred solution is that the worm gear transmission is conducive to transmitting external power to the power transmission mechanism, thereby realizing the push-out and retraction of the first-level telescopic mechanism and the second-level telescopic mechanism.

[0041] Preferably, Figure 3 As shown, a connecting hole 111 is provided on the end of the worm 11 extending out of the box body 13. The connecting hole 111 is a blind hole, and the connecting hole 111 is adapted to be connected to an external crank.

[0042] The beneficial effect of adopting the above preferred solution is that the connecting hole is adapted to be connected with the external crank, which is conducive to the generation and transmission of power by turning the crank.

[0043] Preferably, Figure 4As shown, the power transmission mechanism 2 includes: a screw 21, a turbine mounting seat 22, a bearing 23, a load-bearing seat 24 and a plurality of load-bearing rods 25; the turbine mounting seat 22 is fixedly sleeved on the end of the screw 21 and is connected to the turbine 12, the bearing 23 is sleeved on the screw 21, and the bearing 23 is arranged in the load-bearing seat 24, and the plurality of load-bearing rods 25 are wound around the load-bearing seat 24 and are connected to the inner wall of the support shell 6.

[0044] The beneficial effects of adopting the above-mentioned preferred scheme are: the turbine mounting seat is connected to the turbine, which is conducive to transmitting the power transmitted by the turbine to the screw rod, driving the screw rod to rotate, and the bearing cooperates with the load-bearing seat and the load-bearing rod to ensure that the screw rod rotates coaxially inside the support shell.

[0045] Preferably, Figure 5 As shown, the first-level telescopic mechanism 3 includes: a first-level main rod 31, a transmission nut 32 and a fastening baffle 33; the fastening baffle 33 is arranged at the top of the first-level main rod 31, the transmission nut 32 is arranged in the first-level main rod 31, and is installed on the fastening baffle 33, the screw rod 21 passes through the fastening baffle 33 and the transmission nut 32, and is threadedly connected to the transmission nut 32.

[0046] The beneficial effect of adopting the above preferred solution is that the screw rod is threadedly connected to the transmission nut, which is conducive to driving the transmission nut to move on the screw rod through the rotation of the screw rod, thereby realizing the up and down displacement of the first-level telescopic mechanism.

[0047] Preferably, Figure 5 As shown, the first-level main rod 31 is a tubular structure, and a first-level locking hole 311 is provided on the side wall. The first-level locking hole 311 is a through hole, and the locking mechanism 5 passes through the first-level locking hole 311. The second-level telescopic mechanism 4 is provided in the first-level main rod 31.

[0048] The beneficial effect of adopting the above preferred solution is that the primary locking hole is conducive to cooperating with the secondary locking hole and locking mechanism in the secondary telescopic mechanism to achieve the connection, fixation and height adjustment of the primary telescopic mechanism and the secondary telescopic mechanism.

[0049] Preferably, Figure 6 As shown, the secondary telescopic mechanism 4 includes: a secondary main rod 41, a universal adjustment device 42, a load-bearing plate 43 and a handle 44; the universal adjustment device 42 is arranged at the bottom end of the secondary main rod 41, the load-bearing plate 43 is arranged at the bottom end of the universal adjustment device 42, and the handle 44 is installed on the load-bearing plate 43.

[0050] The beneficial effects of adopting the above-mentioned preferred scheme are: the universal adjustment device is conducive to fixing the load-bearing plate at the bottom end of the secondary main pole in different adjustment postures, so that the load-bearing plate can contact the contact pads on different terrains accordingly, and the handle is conducive to manually and quickly adjusting the secondary main pole up and down within the first main pole, thereby improving the adjustment efficiency of the entire leveling leg.

[0051] Preferably, Figure 6 As shown, the secondary main rod 41 is a tubular structure, and a plurality of secondary locking holes 411 are provided on the side wall. The secondary locking holes 411 are through holes, and the locking mechanism 5 passes through the secondary locking holes 411 and the primary locking hole 311 .

[0052] The beneficial effect of adopting the above preferred solution is that the locking mechanism passes through the secondary locking hole and the primary locking hole, which is conducive to fixing the primary telescopic mechanism and the secondary telescopic mechanism after the length is adjusted.

[0053] Preferably, Figure 5 As shown, the locking mechanism 5 includes a quick-release pin shaft 51 and a spring clamp 52. The spring clamp 52 is arranged on the primary locking hole 311. The quick-release pin shaft 51 passes through the secondary locking hole 411 and the primary locking hole 311, and is clamped with the spring clamp 52.

[0054] The beneficial effect of adopting the above-mentioned preferred scheme is that the quick-release pin shaft passes through the secondary locking hole and the primary locking hole and is clamped with the spring clamp plate, which is conducive to fixing the quick-release pin shaft and preventing the quick-release pin shaft from loosening from the secondary locking hole and the primary locking hole during operation.

[0055] Preferably, Figure 6 As shown, the universal adjustment device 42 includes: a ball head fixing seat 421, a ball head cover plate 422 and a ball head support leg 423; the ball head fixing seat 421 is an arc-shaped block structure arranged at the bottom end of the secondary main rod 41, the ball head cover plate 422 is arranged at the bottom end of the secondary main rod 41, and the ball head support leg 423 is adapted and rotatably arranged in the space formed by the ball head fixing seat 421 and the ball head cover plate 422, and the bearing plate 43 is installed on the ball head support leg 423 by screws.

[0056] The beneficial effect of adopting the above preferred solution is that it is conducive to rotatably setting the ball head support leg in the space formed by the ball head fixing seat and the ball head cover plate, thereby realizing universal adjustment of the bearing plate.

[0057] The working process of the present invention is described below by an embodiment:

[0058] like Figures 1 to 8As shown, when the leveling leg needs to be extended quickly, the quick-release pin shaft 51 is first manually pulled out from the primary locking hole 311 and the secondary locking hole 411, and then the handle 44 is held to pull the secondary telescopic mechanism 4 downward from the primary telescopic mechanism 3 until one of the secondary locking holes 411 is coaxial with the primary locking hole 311, and then the quick-release pin shaft 51 is inserted into the coaxially arranged primary locking hole 311 and the secondary locking hole 411 to complete the fixation, and finally the crank is inserted into the connecting hole 111, and the worm 11 is manually rotated. Through a series of transmissions of the worm gear 12, the screw rod 21, and the transmission nut 32, the overall fine adjustment of the primary telescopic mechanism 3 and the secondary telescopic mechanism 4 is achieved until the load-bearing plate 43 abuts against the block on the ground;

[0059] Similarly, when the leveling leg needs to be retracted quickly, first manually pull out the quick-release pin shaft 51 from the primary locking hole 311 and the secondary locking hole 411, then hold the handle 44, push the secondary telescopic mechanism 4 upward from the primary telescopic mechanism 3 until the uppermost secondary locking hole 411 is coaxial with the primary locking hole 311, and then insert the quick-release pin shaft 51 into the coaxially arranged primary locking hole 311 and the secondary locking hole 411 to complete the fixation.

[0060] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0062] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0063] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0065] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A quick-insert manual two-stage leveling leg, characterized in that: include: A speed change mechanism (1), a power transmission mechanism (2), a primary telescopic mechanism (3), a secondary telescopic mechanism (4), a locking mechanism (5) and a supporting shell (6); the power transmission mechanism (2) is arranged below the speed change mechanism (1) and is connected to the speed change mechanism (1); the primary telescopic mechanism (3) is mounted on the power transmission mechanism (2) so as to be movable up and down and is connected to the power transmission mechanism (2); the primary telescopic mechanism (3) is mounted on the secondary telescopic mechanism (4) and is connected to the secondary telescopic mechanism (4) through the locking mechanism (5); the supporting shell (6) is mounted on the primary telescopic mechanism (3) and its top end is connected to the bottom end of the speed change mechanism (1).

2. A quick-insert manual two-stage leveling leg according to claim 1, characterized in that: The speed change mechanism (1) comprises: a worm (11), a turbine (12) and a housing (13); the worm (11) and the turbine (12) are both arranged in the housing (13), the worm (11) is meshed with the turbine (12), and the turbine (12) is connected to the power transmission mechanism (2).

3. A quick-insert manual two-stage leveling leg according to claim 2, characterized in that: A connecting hole (111) is provided on the end of the worm (11) extending out of the box (13); the connecting hole (111) is a blind hole; and the connecting hole (111) is adapted to be connected to an external crank.

4. The quick-insert manual two-stage leveling leg according to claim 2, characterized in that: The power transmission mechanism (2) comprises: a screw (21), a turbine mounting seat (22), a bearing (23), a bearing seat (24) and a plurality of bearing rods (25); the turbine mounting seat (22) is fixedly sleeved on the end of the screw (21) and connected to the turbine (12); the bearing (23) is sleeved on the screw (21); the bearing (23) is arranged in the bearing seat (24); the plurality of bearing rods (25) are wound around the bearing seat (24) and connected to the inner wall of the support shell (6).

5. The quick-insert manual two-stage leveling leg according to claim 4, characterized in that: The first-level telescopic mechanism (3) comprises: a first-level main rod (31), a transmission nut (32) and a fastening baffle (33); the fastening baffle (33) is arranged at the top end of the first-level main rod (31), the transmission nut (32) is arranged in the first-level main rod (31) and is installed on the fastening baffle (33), and the screw rod (21) passes through the fastening baffle (33) and the transmission nut (32) and is threadedly connected to the transmission nut (32).

6. The quick-insert manual two-stage leveling leg according to claim 5, characterized in that: The primary main rod (31) is a tubular structure, and a primary locking hole (311) is provided on the side wall. The primary locking hole (311) is a through hole, and the locking mechanism (5) passes through the primary locking hole (311). The secondary telescopic mechanism (4) is provided in the primary main rod (31).

7. A quick-insert manual two-stage leveling leg according to claim 6, characterized in that: The secondary telescopic mechanism (4) comprises: a secondary main rod (41), a universal adjustment device (42), a load-bearing plate (43) and a handle (44); the universal adjustment device (42) is arranged at the bottom end of the secondary main rod (41), the load-bearing plate (43) is arranged at the bottom end of the universal adjustment device (42), and the handle (44) is mounted on the load-bearing plate (43).

8. The quick-insert manual two-stage leveling leg according to claim 7, characterized in that: The secondary main rod (41) is a tubular structure, and a plurality of secondary locking holes (411) are provided on the side wall. The secondary locking holes (411) are through holes, and the locking mechanism (5) passes through the secondary locking holes (411) and the primary locking hole (311).

9. The quick-insert manual two-stage leveling leg according to claim 8, characterized in that: The locking mechanism (5) comprises a quick-release pin shaft (51) and a spring clamping plate (52), wherein the spring clamping plate (52) is arranged on the primary locking hole (311), and the quick-release pin shaft (51) passes through the secondary locking hole (411) and the primary locking hole (311), and is clamped with the spring clamping plate (52).

10. The quick-insert manual two-stage leveling leg according to claim 7, characterized in that: The universal adjustment device (42) comprises: a ball head fixing seat (421), a ball head cover plate (422) and a ball head support leg (423); the ball head fixing seat (421) is an arc-shaped block structure arranged at the bottom end of the inner side of the secondary main rod (41); the ball head cover plate (422) is arranged at the bottom end of the secondary main rod (41); the ball head support leg (423) is adapted and rotatably arranged in the space formed by the ball head fixing seat (421) and the ball head cover plate (422); and the bearing plate (43) is mounted on the ball head support leg (423) by screws.

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